One of the best sources for gear knowledge is your local outfitter. They should help you find just the right piece of gear and help with any sizing issues. They usually also offer great recommendations for local hikes.
Choose a State
Local Rhode Island Camping Stores
154 Thames Street Newport, RI 2840 (401) 849-6666
URE Outfitters, Inc.
1009 Main Street Hope Valley, RI 2832 (401) 539-4050